The method is to recycle and purify the secondary resources of noble metals.
这是一种贵金属二次资源的利用回收和提纯方法。
2
Secondary regulation system with the purpose of high efficiency and energy saving can recycle and reuse the system energy.
二次调节系统以高利用率和节能为目的，对系统能量进行回收再利用。
3
Stickies of waste paper in the process of secondary fiber were introduced. The assortment and measurement of stickies were shown in emphasis, it is active to recycle waste paper.